9920041012247 has 2 divisors, whose sum is σ = 9920041012248. Its totient is φ = 9920041012246.

The previous prime is 9920041012223. The next prime is 9920041012303. The reversal of 9920041012247 is 7422101400299.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9920041012247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9920041012207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4960020506123 + 4960020506124.

It is an arithmetic number, because the mean of its divisors is an integer number (4960020506124).

Almost surely, 2^{9920041012247} is an apocalyptic number.

9920041012247 is a deficient number, since it is larger than the sum of its proper divisors (1).

9920041012247 is an equidigital number, since it uses as much as digits as its factorization.

9920041012247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 41.

The spelling of 9920041012247 in words is "nine trillion, nine hundred twenty billion, forty-one million, twelve thousand, two hundred forty-seven".